nsc nsaid • N series · · · Info · Definitions · Characters · · nsc · · Text Latin · · Script 3 · · Length 1 · · Syllables Definitions · · · (noun) a committee in the executive branch of government that advises the president on foreign and military and national security; supervises the Central Intelligence Agency. Synonyms: National Security Council, NSC. · · Noun Definition 1 Characters · · c latin small letter c U+0063 n latin small letter n U+006E s latin small letter s U+0073